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I have two server use ssh to remote login another server , howerver , when one of server is migratied , the server is unable to use ssh to connect it ( the screen is hold ) , I have already moved the all user's .ssh to new server , but still not work , can advise what is wrong ? thx
if I re-setup the ssh ( the normal procedure : ssh-keygen -t rsa , then copy to remote server , .... etc ) , the user can use ssh now , but I have hundreds of users , so I would like to ask except re-setup ssh for all users , what can i do ? thx
Did you mean to say: I have two servers which log into remotely to a third server.
Which server are you migrating? One of the first two or the third?
Look in the logs of the server after a relocated user tries to log in.
What do you mean by "the screen is hold"?
One thing to check is the permissions of the users' home directories or their .ssh directory or the .ssh/id_rsa file.
Also try logging in as a migrated user using "ssh -vv <username@host>". Post the result. Then check the log on the ssh server.
Do the users now have a new IP or domain name?